Last night's episode of The Big Bang Theory dominated the ratings in its time period to rank as Thursday night's number one show.

This week's episode, "The Comic Book Store Regeneration" which featured guest star Nathan Fillion, had 17.49 million viewers, adding 400,000 people over the previous episode's 17.09m. The show scored a 4.5/15 rating in the key adults 18-49 demographic, slipping a tenth from the February 5 episode's 4.6/15 rating. The Big Bang Theory was first in all key ratings for its time slot and the night overall.

More about the episode

As they prepare for the reopening of Stuart's comic book store, the gang is at each other's throats. Howard is angry at Stuart for taking furniture from his mother, while Penny and Leonard are angry with Amy and Sheldon for running experiments on them. Meanwhile, Leonard and Raj think they see Firefly star Nathan Fillion at a restaurant.

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